Question 1

The gaps between Schwann cells found at regular intervals in peripheral system neurons are called ________.

Accepted Answer

The gaps between Schwann cells found at regular intervals in peripheral system neurons are called nodes of Ranvier.

Question 2

The part of the neuron that typically conducts nerve impulses away from the cell body is the ________.

Accepted Answer

The axon is the long, slender projection of a neuron that conducts nerve impulses away from the cell body towards other neurons or muscle cells. Both dendrites and the cell body receive signals from other neurons, while the synaptic cleft is the tiny gap between neurons where neurotransmitters are released to carry signals.

Question 3

Bundles of nerve fibers (neuron processes) running through the CNS are called ________, whereas in the PNS they are called ________.

Accepted Answer

Tracts are bundles of nerve fibers (axons) running through the CNS, while nerves are bundles of nerve fibers (axons) running through the PNS.

Question 4

Support cells in the central nervous system are collectively called ________.

Accepted Answer

The term "neuroglia" refers to the various types of support cells in the central nervous system, including oligodendrocytes (which form myelin sheaths) and microglia (which act as immune cells in the CNS).

Question 5

Using Figure 7.1, identify the following:
-The axon is indicated by ________.

Accepted Answer

The answer of  
Using Figure 7.1, identify the following:
-The...

Question 6

Sensory receptors located in muscles and tendons are termed ________.

Accepted Answer

Sensory receptors located in muscles and tendons are called proprioceptors, which provide information about the position, movement, and tension of muscles and joints to the brain. Meissner's corpuscles and lamellar corpuscles are located in the skin and provide information about touch and pressure. Association neurons are located in the spinal cord and brain and integrate information from different sensory neurons.

Question 7

________ cells form the myelin sheaths around nerve fibers in the PNS.

Accepted Answer

Schwann cells are responsible for forming the myelin sheaths around nerve fibers in the peripheral nervous system (PNS). Satellite cells are responsible for regulating the environment around neurons in the PNS, while ependymal cells line the ventricles of the brain and central canal of the spinal cord. Nerve cells are another term for neurons, which transmit nerve impulses.

Question 8

Using Figure 7.1, identify the following:
-The gaps between Schwann cells are indicated by ________.

Accepted Answer

Label H indicates the gaps between Schwann cells, also known as the nodes of Ranvier.

Question 9

Using Figure 7.1, identify the following:
-The axon terminals are indicated by ________.

Accepted Answer

The answer of  
Using Figure 7.1, identify the following:
-The...

Question 10

Using Figure 7.1, identify the following:
-The metabolic center of the neuron is indicated by ________.

Accepted Answer

The answer of  
Using Figure 7.1, identify the following:
-The...

Question 11

The brain dysfunction where blood supply to a region (or regions) of the brain is blocked and vital brain tissue dies, as by a blood clot or a ruptured blood vessel, is called ________.

Accepted Answer

The described brain dysfunction is commonly known as a stroke or cerebrovascular accident (CVA). Parkinson's disease, Huntington's disease, and multiple sclerosis are all disorders of the nervous system, but they do not involve the same type of blood supply blockage that a stroke does.

Question 12

The thalamus, hypothalamus, and epithalamus collectively constitute the ________.

Accepted Answer

The thalamus, hypothalamus, and epithalamus are all part of the diencephalon, also known as the interbrain. This region of the brain is located beneath the cerebral hemispheres and above the brain stem, and it includes several important structures involved in regulating bodily functions such as homeostasis, sensory processing, and hormone secretion. The cerebellum is a separate structure located at the back of the brain, while the brain stem and cerebrum are other major regions of the brain with distinct functions.

Question 13

Using Figure 7.1, identify the following:
-The neural processes that convey incoming messages toward the cell body are indicated by ________.

Accepted Answer

The neural processes that convey incoming messages toward the cell body are dendrites, which are indicated by Label A in a typical diagram of a neuron.

Question 14

The nervous system is structurally subdivided into two systems: ________ nervous system and ________ nervous system.

Accepted Answer

The central nervous system includes the brain and spinal cord, while the peripheral nervous system includes all the nerves and ganglia outside of the brain and spinal cord. This structural subdivision is represented by choice A. The other choices represent functional subdivisions of the nervous system.

Question 15

The cell bodies of the ________ neurons are always located within the CNS.

Accepted Answer

Motor neurons are responsible for transmitting signals from the central nervous system to the muscles and glands of the body. Their cell bodies are located within the CNS, specifically within the brainstem and spinal cord.

Question 16

Myelinated fibers (tracts) form ________ matter while unmyelinated fibers form ________ matter.

Accepted Answer

Myelinated fibers (tracts) form white matter while unmyelinated fibers form gray matter.

Question 17

________ reflexes include the secretion of saliva, changes in the size of our pupils, and digestion involve the activities of smooth muscles.

Accepted Answer

Autonomic reflexes are involuntary and regulate activities such as digestion, heart rate, and respiratory rate. These reflexes involve the activity of smooth muscles, such as those found in the digestive tract, and are controlled by the autonomic nervous system. Saliva secretion and changes in pupil size are also examples of autonomic reflexes.

Question 18

During repolarization, ________ ions are pumped out of the cell.

Accepted Answer

During repolarization, sodium ions are pumped out of the cell to restore the resting membrane potential after depolarization.

Question 19

________ connect sensory and motor neurons in neural pathways and their cell bodies are typically located in the central nervous system.

Accepted Answer

Interneurons connect sensory and motor neurons, allowing for complex neural processes such as reflexes and higher order thinking. They are typically located in the central nervous system. Afferent and efferent neurons refer specifically to sensory and motor neurons, respectively. Proprioceptors are sensory receptors that detect changes in body position and movement.

Question 20

Using Figure 7.1, identify the following:
-The nucleus of the neuron is indicated by ________.

Accepted Answer

The nucleus of the neuron is indicated by Label E in Figure 7.1.

Quiz 7: The Nervous System

The gaps between Schwann cells found at regular intervals in peripheral system neurons are called ________.

The part of the neuron that typically conducts nerve impulses away from the cell body is the ________.

Bundles of nerve fibers (neuron processes) running through the CNS are called , whereas in the PNS they are called .

Support cells in the central nervous system are collectively called ________.

Using Figure 7.1, identify the following: -The axon is indicated by ________.

Sensory receptors located in muscles and tendons are termed ________.

________ cells form the myelin sheaths around nerve fibers in the PNS.

Using Figure 7.1, identify the following: -The gaps between Schwann cells are indicated by ________.

Using Figure 7.1, identify the following: -The axon terminals are indicated by ________.

Using Figure 7.1, identify the following: -The metabolic center of the neuron is indicated by ________.

The brain dysfunction where blood supply to a region (or regions) of the brain is blocked and vital brain tissue dies, as by a blood clot or a ruptured blood vessel, is called ________.

The thalamus, hypothalamus, and epithalamus collectively constitute the ________.

Using Figure 7.1, identify the following: -The neural processes that convey incoming messages toward the cell body are indicated by ________.

The nervous system is structurally subdivided into two systems: nervous system and nervous system.

The cell bodies of the ________ neurons are always located within the CNS.

Myelinated fibers (tracts) form matter while unmyelinated fibers form matter.

________ reflexes include the secretion of saliva, changes in the size of our pupils, and digestion involve the activities of smooth muscles.

During repolarization, ________ ions are pumped out of the cell.

________ connect sensory and motor neurons in neural pathways and their cell bodies are typically located in the central nervous system.

Using Figure 7.1, identify the following: -The nucleus of the neuron is indicated by ________.